CA2332572A1 - Systeme et procede pour communiquer avec plusieurs emetteurs a distance - Google Patents
Systeme et procede pour communiquer avec plusieurs emetteurs a distance Download PDFInfo
- Publication number
- CA2332572A1 CA2332572A1 CA002332572A CA2332572A CA2332572A1 CA 2332572 A1 CA2332572 A1 CA 2332572A1 CA 002332572 A CA002332572 A CA 002332572A CA 2332572 A CA2332572 A CA 2332572A CA 2332572 A1 CA2332572 A1 CA 2332572A1
- Authority
- CA
- Canada
- Prior art keywords
- signal
- chirp
- signals
- transmitter
- digital data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B14/00—Transmission systems not characterised by the medium used for transmission
- H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
- H04B14/026—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse time characteristics modulation, e.g. width, position, interval
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/123—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams
- G08G1/127—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams to a central station ; Indicators in a central station
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/103—Chirp modulation
Abstract
L'invention concerne un système pour communiquer avec plusieurs émetteurs à distance, dans lequel les émetteurs envoient des messages sans une source de synchronisation commune ou sans interrogation par un récepteur de contrôle. Dans un mode de réalisation, le système utilise la position temporelle de signaux modulés en fréquence pour coder l'identité et/ou d'autres informations envoyées par le récepteur. Ce système peut mettre en oeuvre des émetteurs d'un coût relativement faible puisqu'il n'est pas nécessaire que ceux-ci possèdent une fonction de réception de message ou de signal de synchronisation et que la source de signal de synchronisation interne au sein de l'émetteur peut être un dispositif ou un circuit relativement bon marché.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US1998/011472 WO1999063500A1 (fr) | 1998-06-04 | 1998-06-04 | Systeme et procede pour communiquer avec plusieurs emetteurs a distance |
Publications (1)
Publication Number | Publication Date |
---|---|
CA2332572A1 true CA2332572A1 (fr) | 1999-12-09 |
Family
ID=22267228
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002332572A Abandoned CA2332572A1 (fr) | 1998-06-04 | 1998-06-04 | Systeme et procede pour communiquer avec plusieurs emetteurs a distance |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1086446B1 (fr) |
JP (1) | JP2002517843A (fr) |
KR (1) | KR20010052576A (fr) |
CN (1) | CN1172192C (fr) |
AU (1) | AU759231B2 (fr) |
CA (1) | CA2332572A1 (fr) |
DE (1) | DE69807757T2 (fr) |
WO (1) | WO1999063500A1 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6850553B1 (en) * | 2000-03-17 | 2005-02-01 | Harris Corporation | Chirp slope multiple access |
US20060039451A1 (en) * | 2004-08-23 | 2006-02-23 | Xiangyang Zhuang | Method and apparatus for fast cell search |
EP2062242B1 (fr) * | 2006-09-14 | 2016-03-09 | Crown Equipment Corporation | Systèmes et procédés de commande à distance d'un véhicule de manutention de matériaux |
KR101164745B1 (ko) | 2007-12-05 | 2012-07-12 | 콸콤 인코포레이티드 | 글로벌 네비게이션 수신기 |
CN102944272B (zh) * | 2012-11-19 | 2014-07-23 | 成都泛华航空仪表电器有限公司 | 电感式流量计测量转换器 |
WO2014201440A1 (fr) | 2013-06-14 | 2014-12-18 | Lockheed Martin Corporation | Système, procédé, et appareil de communication insensible à une erreur d'horloge d'échantillonnage |
EP3471279A4 (fr) | 2016-06-08 | 2020-01-22 | Sony Semiconductor Solutions Corporation | Dispositif et procédé de traitement d'informations, dispositif et procédé d'émission, et dispositif et procédé de réception |
CN109856594B (zh) * | 2019-01-31 | 2020-10-13 | 北京电子工程总体研究所 | 一种时差测量体制无源定位的多路可控时延信号产生装置 |
CN114902773A (zh) * | 2022-04-11 | 2022-08-12 | 北京小米移动软件有限公司 | 一种发送直连测距信号的方法方法及装置 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US550549A (en) * | 1895-11-26 | Type-writing machine | ||
US3714573A (en) * | 1970-05-06 | 1973-01-30 | Hazeltine Corp | Spread-spectrum position monitoring system |
US4553213A (en) * | 1970-12-28 | 1985-11-12 | Hyatt Gilbert P | Communication system |
US4037159A (en) * | 1974-11-01 | 1977-07-19 | Harris Corporation | Chirp communication system |
US4289931A (en) * | 1979-11-28 | 1981-09-15 | Micro-Tek, Inc. | Security identification system using pulse code modulation |
US4513403A (en) * | 1982-08-04 | 1985-04-23 | Exploration Logging, Inc. | Data encoding and synchronization for pulse telemetry |
JPS6259432A (ja) * | 1985-09-10 | 1987-03-16 | Nec Corp | Fdm/tdm相互変換方式 |
US4721958A (en) * | 1985-10-23 | 1988-01-26 | Trw Inc. | Real-time pulse processor |
GB2182470B (en) * | 1985-10-30 | 1988-12-07 | Racal Res Ltd | Radiopaging systems and radio pagers and basestations therefor |
AU582038B2 (en) * | 1986-02-04 | 1989-03-09 | British Aerospace Australia Limited | Spread-spectrum multiplexed transmission system |
JPS6488273A (en) * | 1987-09-30 | 1989-04-03 | Nec Corp | Communication/position-measurement system of moving body by satellites |
GB8726830D0 (en) * | 1987-11-17 | 1987-12-23 | Martin J A | Monitoring system |
US5278862A (en) * | 1992-04-03 | 1994-01-11 | Intellon Corporation | Timing for spread-spectrum communication across noisy media |
CA2080024A1 (fr) * | 1990-04-06 | 1991-10-07 | Vick Russell | Modulation integree |
US5216429A (en) * | 1991-04-17 | 1993-06-01 | Ricoh Company, Ltd. | Position measuring system using pseudo-noise signal transmission and reception |
US5483244A (en) * | 1994-04-05 | 1996-01-09 | Motorola, Inc. | Method and apparatus of determining location of an unauthorized communication unit |
US5550549A (en) * | 1995-02-28 | 1996-08-27 | Harris Corporation | Transponder system and method |
US5758277A (en) * | 1996-09-19 | 1998-05-26 | Corsair Communications, Inc. | Transient analysis system for characterizing RF transmitters by analyzing transmitted RF signals |
-
1998
- 1998-06-04 CN CNB988140918A patent/CN1172192C/zh not_active Expired - Fee Related
- 1998-06-04 DE DE69807757T patent/DE69807757T2/de not_active Expired - Lifetime
- 1998-06-04 AU AU77227/98A patent/AU759231B2/en not_active Ceased
- 1998-06-04 JP JP2000552641A patent/JP2002517843A/ja active Pending
- 1998-06-04 KR KR1020007013746A patent/KR20010052576A/ko active IP Right Grant
- 1998-06-04 EP EP98925225A patent/EP1086446B1/fr not_active Expired - Lifetime
- 1998-06-04 CA CA002332572A patent/CA2332572A1/fr not_active Abandoned
- 1998-06-04 WO PCT/US1998/011472 patent/WO1999063500A1/fr active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
AU7722798A (en) | 1999-12-20 |
EP1086446B1 (fr) | 2002-09-04 |
JP2002517843A (ja) | 2002-06-18 |
DE69807757T2 (de) | 2003-06-05 |
CN1295701A (zh) | 2001-05-16 |
KR20010052576A (ko) | 2001-06-25 |
WO1999063500A1 (fr) | 1999-12-09 |
AU759231B2 (en) | 2003-04-10 |
DE69807757D1 (de) | 2002-10-10 |
CN1172192C (zh) | 2004-10-20 |
EP1086446A1 (fr) | 2001-03-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
FZDE | Discontinued | ||
FZDE | Discontinued |
Effective date: 20090721 |